Your Question : What is a DALLE DE VERRE?

Thank you for asking - Its a fancy name for SLAB GLASS.

Dalle De Verre (Slab Glass)
Blenko Glass Company began producing Dalle de Verre in the late 1950's when the process was brought to us from France, making Blenko the first United States company to produce dalles. Blenko dalles are hand cast from soda-lime-silica glass and come in a wide variety of repeatable colors. Our hand cast method has not changed since we began making dalles. Dalle de Verre is relatively easy to design and construct, and is an excellent alternative to traditional sheet glass installations. Sample sets are available. Please contact http://www.blenkoglass.com/
for availability and pricing, or phone Don Lemley Antique Glass 304 743 9081.
Tthis information was provided by BLENKO GLASS.